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annotate src/power/linux/SDL_syspower.c @ 3203:790cbbda6429

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Power: First shot at Linux /proc/acpi/battery support. Untested, not even tried to compile yet.
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 30 Jun 2009 03:50:30 +0000
parents 51750b7a966f
children f77f50add24f
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifndef SDL_POWER_DISABLED
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25 #ifdef SDL_POWER_LINUX
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26
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27 #include <stdio.h>
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28 #include <unistd.h>
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29
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30 #include <sys/types.h>
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31 #include <sys/stat.h>
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32 #include <dirent.h>
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33 #include <fcntl.h>
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34
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35 #include "SDL_power.h"
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36
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37 SDL_bool
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38 SDL_GetPowerInfo_Linux_sys_power(SDL_PowerState * state,
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39 int *seconds, int *percent)
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40 {
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41 return SDL_FALSE; /* !!! FIXME: write me. */
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42 }
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43
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44
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45 static const char *proc_acpi_path = "/proc/acpi/battery";
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46
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47 static int open_acpi_file(const char *node, const char *key)
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48 {
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49 const size_t pathlen = strlen(proc_acpi_path)+strlen(node)+strlen(key)+3;
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50 char *path = (char *) alloca(pathlen);
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51 if (path == NULL) {
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52 return -1; /* oh well. */
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53 }
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54
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55 snprintf(path, pathlen, "%s/%s/%s", proc_acpi_path, node, key);
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56 return open(path, O_RDONLY);
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57 }
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58
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59
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60 static SDL_bool
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61 load_acpi_file(const char *node, const char *key, char *buf, size_t buflen)
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62 {
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63 ssize_t br = 0;
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64 const int fd = open_acpi_file(node, key);
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65 if (fd == -1) {
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66 return SDL_FALSE;
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67 }
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68 br = read(fd, buf, buflen-1);
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69 close(fd);
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70 if (br < 0) {
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71 return SDL_FALSE;
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72 }
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73 buf[br] = '\0'; // null-terminate the string.
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74 return SDL_TRUE;
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75 }
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76
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77 static SDL_bool
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78 make_acpi_key_val(char **_ptr, char **_key, char **_val)
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79 {
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80 char *ptr = *_ptr;
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81
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82 while (*ptr == ' ') {
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83 ptr++; /* skip whitespace. */
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84 }
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85
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86 if (*ptr == '\0') {
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87 return SDL_FALSE; /* EOF. */
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88 }
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89
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90 *_key = ptr;
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91
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92 while ((*ptr != ':') && (*ptr != '\0')) {
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93 ptr++;
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94 }
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95
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96 if (*ptr == '\0') {
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97 return SDL_FALSE; /* (unexpected) EOF. */
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98 }
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99
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100 *(ptr++) = '\0'; /* terminate the key. */
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101
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102 while ((*ptr == ' ') && (*ptr != '\0')) {
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103 ptr++; /* skip whitespace. */
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104 }
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105
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106 if (*ptr == '\0') {
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107 return SDL_FALSE; /* (unexpected) EOF. */
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108 }
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109
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110 *_val = ptr;
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111
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112 while ((*ptr != '\n') && (*ptr != '\0')) {
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113 ptr++;
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114 }
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115
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116 if (*ptr != '\0') {
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117 *(ptr++) = '\0'; /* terminate the value. */
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118 }
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119
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120 *_ptr = ptr; /* store for next time. */
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121 return SDL_TRUE;
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122 }
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123
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124 static void
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125 check_acpi(const char * fname, SDL_bool * have_ac, SDL_bool * have_battery,
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126 SDL_bool * charging, int *seconds, int *percent)
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127 {
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128 int fd = -1;
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129 char info[1024];
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130 char state[1024];
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131 ssize_t br = 0;
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132 char *ptr = NULL;
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133 char *key = NULL;
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134 char *val = NULL;
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135 SDL_bool charge = SDL_FALSE;
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136 SDL_bool choose = SDL_FALSE;
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137 SDL_bool is_ac = SDL_FALSE;
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diff changeset
138 int maximum = -1;
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diff changeset
139 int remaining = -1;
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diff changeset
140 int secs = -1;
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diff changeset
141 int pct = -1;
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142
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diff changeset
143 if (!load_acpi_file(fname, "state", state, sizeof (state))) {
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diff changeset
144 return;
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diff changeset
145 } else if (!load_acpi_file(fname, "info", info, sizeof (info))) {
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diff changeset
146 return;
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diff changeset
147 }
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148
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149 ptr = &state[0];
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150 while (make_acpi_key_val(&ptr, &key, &val)) {
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151 if (strcmp(key, "present") == 0) {
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152 if (strcmp(val, "yes") == 0) {
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153 *have_battery = SDL_TRUE;
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154 }
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155 } else if (strcmp(key, "charging state") == 0) {
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diff changeset
156 /* !!! FIXME: what exactly _does_ charging/discharging mean? */
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157 if (strcmp(val, "charging/discharging") == 0) {
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diff changeset
158 *have_ac = is_ac = SDL_TRUE;
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159 charge = SDL_TRUE;
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160 } else if (strcmp(val, "charging") == 0) {
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161 *have_ac = is_ac = SDL_TRUE;
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162 charge = SDL_TRUE;
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163 } else if (strcmp(val, "charged") == 0) {
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164 /* !!! FIXME: maybe another battery is discharging,
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165 !!! FIXME: instead of AC connection. */
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166 *have_ac = is_ac = SDL_TRUE;
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167 charge = SDL_TRUE;
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168 }
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169 } else if (strcmp(key, "remaining capacity") == 0) {
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170 char *endptr = NULL;
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diff changeset
171 const int cvt = (int) strtol(val, &endptr, 10);
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172 if (*endptr == ' ') {
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diff changeset
173 remaining = cvt;
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diff changeset
174 }
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175 }
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176 }
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177
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178 ptr = &info[0];
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diff changeset
179 while (make_acpi_key_val(&ptr, &key, &val)) {
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diff changeset
180 if (strcmp(key, "design capacity") == 0) {
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diff changeset
181 char *endptr = NULL;
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diff changeset
182 const int cvt = (int) strtol(val, &endptr, 10);
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diff changeset
183 if (*endptr == ' ') {
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diff changeset
184 maximum = cvt;
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diff changeset
185 }
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diff changeset
186 }
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diff changeset
187 }
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diff changeset
188
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diff changeset
189 if ((maximum >= 0) && (remaining >= 0)) {
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diff changeset
190 pct = (int) ((((float) remaining) / ((float) maximum)) * 100.0f);
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diff changeset
191 if (pct < 0) {
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diff changeset
192 pct = 0;
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diff changeset
193 } else if (pct > 100) {
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diff changeset
194 pct = 100;
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diff changeset
195 }
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diff changeset
196 }
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diff changeset
197
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diff changeset
198 /* !!! FIXME: calculate (secs). */
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diff changeset
199
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diff changeset
200 /*
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diff changeset
201 * We pick the battery that claims to have the most minutes left.
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diff changeset
202 * (failing a report of minutes, we'll take the highest percent.)
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diff changeset
203 */
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diff changeset
204 if ((secs < 0) && (*seconds < 0)) {
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diff changeset
205 if ((pct < 0) && (*percent < 0)) {
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diff changeset
206 choose = SDL_TRUE; /* at least we know there's a battery. */
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diff changeset
207 }
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diff changeset
208 if (pct > *percent) {
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diff changeset
209 choose = SDL_TRUE;
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diff changeset
210 }
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diff changeset
211 } else if (secs > *seconds) {
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diff changeset
212 choose = SDL_TRUE;
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diff changeset
213 }
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diff changeset
214
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diff changeset
215 if (choose) {
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diff changeset
216 *seconds = secs;
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diff changeset
217 *percent = pct;
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diff changeset
218 *charging = charge;
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diff changeset
219 }
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diff changeset
220
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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diff changeset
221 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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parents:
diff changeset
222
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
223 SDL_bool
3186
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diff changeset
224 SDL_GetPowerInfo_Linux_proc_acpi(SDL_PowerState * state,
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
225 int *seconds, int *percent)
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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diff changeset
226 {
3203
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diff changeset
227 struct dirent *dent = NULL;
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diff changeset
228 DIR *dirp = NULL;
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diff changeset
229 SDL_bool have_ac = SDL_FALSE;
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diff changeset
230 SDL_bool have_battery = SDL_FALSE;
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diff changeset
231 SDL_bool charging = SDL_FALSE;
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diff changeset
232
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diff changeset
233 *seconds = -1;
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diff changeset
234 *percent = -1;
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diff changeset
235 *state = SDL_POWERSTATE_UNKNOWN;
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diff changeset
236
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diff changeset
237 dirp = opendir(proc_acpi_path);
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parents: 3186
diff changeset
238 if (dirp == NULL) {
790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
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parents: 3186
diff changeset
239 return SDL_FALSE; /* can't use this interface. */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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parents:
diff changeset
240 }
3203
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diff changeset
241
790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
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diff changeset
242 while ((dent = readdir(dirp)) != NULL) {
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diff changeset
243 const char *name = dent->d_name;
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parents: 3186
diff changeset
244 check_acpi(name, &have_ac, &have_battery, &charging, seconds, percent);
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parents: 3186
diff changeset
245 }
790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
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parents: 3186
diff changeset
246
790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
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parents: 3186
diff changeset
247 if (!have_battery) {
790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
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parents: 3186
diff changeset
248 *state = SDL_POWERSTATE_NO_BATTERY;
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parents: 3186
diff changeset
249 } else if (charging) {
790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
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parents: 3186
diff changeset
250 *state = SDL_POWERSTATE_CHARGING;
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parents: 3186
diff changeset
251 } else if (have_ac) {
790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
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parents: 3186
diff changeset
252 *state = SDL_POWERSTATE_CHARGED;
790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
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parents: 3186
diff changeset
253 } else {
790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
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parents: 3186
diff changeset
254 *state = SDL_POWERSTATE_ON_BATTERY;
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diff changeset
255 }
790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
Ryan C. Gordon <icculus@icculus.org>
parents: 3186
diff changeset
256
790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
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diff changeset
257 return SDL_TRUE; /* definitive answer. */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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parents:
diff changeset
258 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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parents:
diff changeset
259
3203
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diff changeset
260
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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parents:
diff changeset
261 static SDL_bool
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
262 next_string(char **_ptr, char **_str)
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
263 {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
264 char *ptr = *_ptr;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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parents:
diff changeset
265 char *str = *_str;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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parents:
diff changeset
266
3186
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parents: 3174
diff changeset
267 while (*ptr == ' ') { /* skip any spaces... */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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parents:
diff changeset
268 ptr++;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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parents:
diff changeset
269 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
270
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
271 if (*ptr == '\0') {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
272 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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parents:
diff changeset
273 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
274
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
275 str = ptr;
3203
790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
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diff changeset
276 while ((*ptr != ' ') && (*ptr != '\n') && (*ptr != '\0'))
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
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diff changeset
277 ptr++;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
278
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
279 if (*ptr != '\0')
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
280 *(ptr++) = '\0';
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
281
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
282 *_str = str;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
283 *_ptr = ptr;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
284 return SDL_TRUE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
285 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
286
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
287 static SDL_bool
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
288 int_string(char *str, int *val)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
289 {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
290 char *endptr = NULL;
3186
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291 *val = (int) strtol(str + 2, &endptr, 16);
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
292 return ((*str != '\0') && (*endptr == '\0'));
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
293 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
294
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
295 /* http://lxr.linux.no/linux+v2.6.29/drivers/char/apm-emulation.c */
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
296 SDL_bool
3186
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diff changeset
297 SDL_GetPowerInfo_Linux_proc_apm(SDL_PowerState * state,
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
298 int *seconds, int *percent)
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
299 {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
300 SDL_bool need_details = SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
301 int ac_status = 0;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
302 int battery_status = 0;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
303 int battery_flag = 0;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
304 int battery_percent = 0;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
305 int battery_time = 0;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
306 const int fd = open("/proc/apm", O_RDONLY);
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
307 char buf[128];
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
308 char *ptr = &buf[0];
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
309 char *str = NULL;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
310 ssize_t br;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
311
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
312 if (fd == -1) {
3186
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313 return SDL_FALSE; /* can't use this interface. */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
314 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
315
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790cbbda6429 Power: First shot at Linux /proc/acpi/battery support.
Ryan C. Gordon <icculus@icculus.org>
parents: 3186
diff changeset
316 br = read(fd, buf, sizeof (buf) - 1);
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
317 close(fd);
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
318
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
319 if (br < 0) {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
320 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
321 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
322
3186
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diff changeset
323 buf[br] = '\0'; // null-terminate the string.
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
324 if (!next_string(&ptr, &str)) { /* driver version */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
325 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
326 }
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
327 if (!next_string(&ptr, &str)) { /* BIOS version */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
328 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
329 }
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
330 if (!next_string(&ptr, &str)) { /* APM flags */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
331 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
332 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
333
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
334 if (!next_string(&ptr, &str)) { /* AC line status */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
335 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
336 } else if (!int_string(str, &ac_status)) {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
337 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
338 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
339
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
340 if (!next_string(&ptr, &str)) { /* battery status */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
341 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
342 } else if (!int_string(str, &battery_status)) {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
343 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
344 }
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
345 if (!next_string(&ptr, &str)) { /* battery flag */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
346 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
347 } else if (!int_string(str, &battery_flag)) {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
348 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
349 }
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
350 if (!next_string(&ptr, &str)) { /* remaining battery life percent */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
351 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
352 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
353 if (str[strlen(str) - 1] == '%') {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
354 str[strlen(str) - 1] = '\0';
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
355 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
356 if (!int_string(str, &battery_percent)) {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
357 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
358 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
359
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
360 if (!next_string(&ptr, &str)) { /* remaining battery life time */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
361 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
362 } else if (!int_string(str, &battery_time)) {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
363 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
364 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
365
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
366 if (!next_string(&ptr, &str)) { /* remaining battery life time units */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
367 return SDL_FALSE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
368 } else if (strcmp(str, "min") == 0) {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
369 battery_time *= 60;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
370 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
371
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
372 if (battery_flag == 0xFF) { /* unknown state */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
373 *state = SDL_POWERSTATE_UNKNOWN;
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
374 } else if (battery_flag & (1 << 7)) { /* no battery */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
375 *state = SDL_POWERSTATE_NO_BATTERY;
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
376 } else if (battery_flag & (1 << 3)) { /* charging */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
377 *state = SDL_POWERSTATE_CHARGING;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
378 need_details = SDL_TRUE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
379 } else if (ac_status == 1) {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
380 *state = SDL_POWERSTATE_CHARGED; /* on AC, not charging. */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
381 need_details = SDL_TRUE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
382 } else {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
383 *state = SDL_POWERSTATE_ON_BATTERY;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
384 need_details = SDL_TRUE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
385 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
386
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
387 *percent = -1;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
388 *seconds = -1;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
389 if (need_details) {
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
390 const int pct = battery_percent;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
391 const int secs = battery_time;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
392
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
393 if (pct >= 0) { /* -1 == unknown */
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
394 *percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
395 }
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3174
diff changeset
396 if (secs >= 0) { /* -1 == unknown */
3170
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
397 *seconds = secs;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
398 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
399 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
400
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
401 return SDL_TRUE;
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
402 }
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
403
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
404 #endif /* SDL_POWER_LINUX */
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
405 #endif /* SDL_POWER_DISABLED */
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
406
b7a48f533966 Initial work on power subsystem for SDL 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
407 /* vi: set ts=4 sw=4 expandtab: */